英语语法分析

Objective To observe the efficacy of DDVP aerosol against Blattella germanica.

目的了解敌敌畏热烟雾剂对德国小蠊的杀灭效果。

Objective To observe the efficacy of 2% acetaniprid gel bait against Blattella germanica.

目的观察2%啶虫脒杀蟑胶饵对德国小蠊的杀灭效果。

Objective To observe the efficacy of Blattella germanica control with gel bait and poison powder.

目的观察套餐法控制酒店德国小蠊的效果。